Mashing apparatus.



Patented July 4, |899.

0. SELG.

MASHING APPARATUS.

(Application led Feb. 20, 1B99.)'

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d ,520ml (lo Model.)

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UNITED STATES YPATENT OFFICE.

OTTO SELG, OF NEW YORK, N. Y.

IVIASHING APPARATUS.

srncrrrcATroN forming pere of Letters Patent No. 628,232, dated Jury 4,1899.

Application filed February 20, 1899. Serial No. 706,111. (No model.)

To @ZZ whom t may concern:

Be it known that I, OTTO SELG, a citizen of the United States, and aresident of New York, (Brooklym) State of NewYork, haveinvented certainnew and useful Improvements in M ashing Apparatus, of which thefollowing is a specification.

This invention relates to a mashing apparatus used in brewing beer andsimilar beverages, which is so constructed that the entire contentsofthe tub are thoroughly actedupon by the liquids, steam, and compressedair introduced, and that more particularly the formationof a dead layerupon the bottom of the tub is avoided.

In the accompanying drawings, Figure 1 is a vertical longitudinalsection of my improved mashing apparatus and Fig. 2 is ahoriZont-alsection on line 2 2, Fig. l. n

The letter A represents the mash-tub, provided with a concave bottom aand a corresponding perforated false bottom a', adapted to concentratethe grain into a closely-packed body. The steam, thin mash, air, andwater are adapted to be fed into the tub by two different pipes or pipesystems, the one entering through the bottom a and the other arrangedwithin the body of the tub directly above the false bottom ct'. Thus inthe drawings the main conduit-pipe b connects at the top withthesteam-pipe c, thin mash-pipe d, water-pipe e, and compressed-air pipef, while at the bottom it divides into two branches g and h.

The branch g, controlled by cock g', is a circular pipe placed againstthe inner Wall of `tub A directly above the false bottom a. It

has a number of downwardly-opening perforations g2, through which thecontents of the pipe are blown from above into the lower stratum of themash supported upon the false bottom, so as to thoroughly penetrate thesame.

enters the central opening c2 of the bottom a above the discharge-gatea3 and blows the contents of the pipe into the mash from be-v low. Thusby means of the combined action of the branches g h the malt isthoroughly The branch h, controlled by cock h acted upon by the steam,compressed air, and liquids introduced, and the settlement upon thefalse bottom of a body of malt which is not thoroughly worked up andsaturated is avoided. l

` The stirrer is composed of a number of obliquely-set blades 'i i',secured to opposite ends of a series of arms 2, mounted upon thepower-shaft 713. The blades connect adjoining pairs of arms 'i2 at oneend, while the blades i' connect the intermediate pair at the oppositeend, so that in this way an opening is formed at the ends of the armsbetween each adjoining set of blades. This peculiar construction of thestirrer enables it to freely enter the mash and agitate the same in avery perfect manner.

The arms i2 increase in length from the periphery toward the center ofthe tub A, and the blades t' t" are curved-to conform to the curvatureof the falsebottom a', so that they may sweep freely over such bottom.

As the tube g is located above the false bottom,it is clear that themalt supported upon the latter is thoroughly agitated and washed out, sothat all the extract is effectively withdrawn. Moreover, by admittingsteam,hot water, or air to the tub simultaneously from its inner and itsouter side the mash becomes thoroughly and uniformly impregnatedthroughout its body, so that a superior wort is obtained.

In a mashing apparatus, the combination of a mash-tub having a curvedbottom and a perforated curved false bottom, Witha circular innervperforated tube above the false bottom, an outer tube opening into thetubbottom, and means for feeding liquids, steam or compressed air intosaid tubes, substantially as speciied.

Signed by me, at New York city,New York, this 18th day of February,1899.

oTTo snLG.

